The dynamic response of the system under the stiffness excitation induced by the mesh between gears has been obtained,and the dynamic load of gears has been determined.

This paper uses the concept of free velocity to describe the exciting character of vibration source.

Corporate culture type research based on motivation and impartiality;

This paper examines two influencin g factors of valid motivation:incentive and fairness.

For the moment,the research on the incentive problems of the manager of the state-owned enterprises focuses on such explicit incentives as annual pay,bonuses,options and so on,but lacking the research of the other part of the incentive mechanism-systematic research on the implicit incentives which based on Managerial Labor Market.

Based on the recognition of defects in the literatures on implicit incentives accordint to career s concerns,we model manager s multiperiod combinative incentives,derive the optimal incentives,and study the features in the optimal incentives.

For the moment,the research on the incentive problems of the manager of the state-owned enterprises focuses on explicit incentives,but lacks the research on the implicit incentives which bases on Manage- rial Labor Market.

Right now, there are many researches on singular incentive mechanism while less on manifold ones, more focusing on short-term incentive, less focus in long run, more on the explicit incentive, less on the invisible.

The explicit incentive model is established by which venture capitalist should invest its own money and assume infinitude responsibility.

We study explicit incentive and implicit incentive on the risk taking of the open end mutual fund whose compensation contract is Performance based Fee.